Hot water boiler for hot water mat



FIG. 1 a front, top perspective view of a hot water boiler for hot water mat, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear, bottom perspective view thereof;

FIG. 9 is a cross-sectional view thereof taken along line 9-9 of FIG. 2; and,

FIG. 10 is a partial enlarged view thereof according to a circle area 10 of FIG. 9. 

CLAIM We claim, the ornamental design for a hot water boiler for hot water mat, as shown and described. 